[D8020ZBD], Letter from Albert Prescott Marble to Thomas Alva Edison, February 2nd, 1880
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Title
[D8020ZBD], Letter from Albert Prescott Marble to Thomas Alva Edison, February 2nd, 1880
Editor's Notes
Get perfect vacuum by filling bulb with mercury, then evacuating. If necessary, support filament by tinfoil which will melt. Marg: "that will not make a vac that will amt to anything. Carbon horseshoe is flexible as paper & dont require tinf."
Author
Recipient
Date
1880-02-02
Type
Folder/Volume ID
D8020-F
Microfilm ID
53:647
Document ID
D8020ZBD
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University